The F4.3 in signal yellow combines the entire range of engine components from over 7 years of prototyping. We realized the vehicle specifically for the Mille Miglia Rally in Dubai in a record time of 6 months.

BODY

  • Everything made of sheet metal. The body has reached a new level of precision through many iterations. A body that was still produced by hand was scanned in. Parts were reverse engineered into a solid model using SolidWorks. Tools were designed from the data and manufactured with SolidCam on our in-house machines.

  • The second half was mirrored to ensure both sides of the production model were identical. Almost every part is created on the computer and manufactured using the latest methods. Original F Model signature hinged-windows and sunroof offer a practical alternative to the streamlined air conditioning system, even in warm weather.
Close-up of a Yellow Triebwerk F4.3 Porsche 911 rear wheel on a road with a desert landscape

WHEELS

To make a statement and ensure the vehicle stands out at first glance, a new classic wheel design—the Triebwerk wheels—was developed and produced in collaboration with the certified wheel manufacturer Irmler Racing. They come with TÜV certification, of course. These wheels are also compatible with the WTL and the Turbo.

Close-up of a Triebwerk F4.3 engine with yellow and black components.

ENGINE

As the name suggests, the car is powered by a Triebwerk 4.3L engine whose components were developed by EGMO in Switzerland. The cylinder head is machined in-house using a 5-axis process. A masterpiece of reliable, tried-and-tested technology. Combined with the Triebwerk exhaust system, the Triebwerk individual throttle valves with a freely programmable engine control system, and the Triebwerk single-spark ignition system, the engine delivers 438 hp and 465 Nm. The gear ratios of the overhauled transmission have been adjusted.

INTERIOR

  • New full bucket seats with separate electric height adjustment for the front and rear seats were developed for this vehicle. Seat heating with individually adjustable temperature settings for the seat and backrest areas has been installed. The electrically unlockable console allows the seats to be folded forward to provide access to the rear or to store luggage. An emergency release mechanism is also included for additional safety.

    The dashboard has been redesigned, and the cover has been replaced with the one from the F model. The panel features a woven leather-Alcantara composite at the junction with the knee protection strips.

  • The steering wheel has been modified and designed specifically for this vehicle.

    A classic radio has been incorporated alongside the redesigned heating controls. The invisible sound system is completely new. It consists of bodysound elements, a concealed subwoofer, and an Apple CarPlay/Android Auto monitor that can be hidden under the dashboard and easily paired with a cell phone. With a hands-free system and the ability to navigate using Google Maps on a reasonably sized monitor, the car is in no way inferior to a modern vehicle. USB ports with the option to charge and connect a USB drive containing MP3s have been installed. The USB drives, designed to resemble radio buttons, match the look of the system.

GALLERY

  • Yellow Triebwerk F4.3 Porsche 911 on a road with a desert landscape
  • Yellow Triebwerk F4.3 Porsche 911 interior with steering wheel and dashboard in a close-up shot
  • Close-up of a Yellow Triebwerk F4.3 Porsche 911 engine grille with a 4.3 badge.
  • Yellow Triebwerk F4.3 Porsche 911 with engine compartment open.
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CONTACT US TO COMMISSION YOUR OWN CUSTOM TRIEBWERK 911

Frequently Asked Questions

What is Triebwerk?

Triebwerk is the North American presence of Das Triebwerk DTW — a German boxer engine manufaktur and custom builder based in Schwelm, Germany, founded in 2017 by entrepreneur Stephan Rohleder and master technician Christian Wilms. The company specializes in the highest level of Porsche 911 backdating, transforming 964-generation cars into purist interpretations of the early F-model 911, combined with modern engineering developed entirely in-house. Individuality is their DNA — no two builds are the same.

What does "backdating" mean, and what makes Triebwerk's approach different?

Backdating takes a later-generation Porsche 911 — in Triebwerk's case, a 964 from the early 1990s — and returns it to the visual character of the classic 1970s F-model, while simultaneously improving on what's underneath. What separates Triebwerk from other builders is the depth of the work: every body component is fabricated from 100% steel sheet metal using deep-draw tooling produced in-house — no fiberglass, no shortcuts. The front and rear sections are fully redesigned, front and rear carriers are swapped for original F-model parts, and even the pop-out windows on the coupe are reinstated. Each build requires close to 2,000 hours of skilled manual labor. The engine is developed in cooperation with Swiss specialists Eggenberger Motorenbau AG, with displacements from 3.6 to 4.3 liters, custom single-throttle intake systems, and fully programmable engine management — all built and validated on Triebwerk's own test benches.

Can I commission a custom Triebwerk 911, and what does the process look like?

Yes — every Triebwerk is a bespoke commission. The process starts with a detailed specification sheet covering both technical and aesthetic preferences: engine displacement (F3.5 through F4.3), gearbox setup, paint color, interior materials, and optional features ranging from an aluminum hood and retractable ducktail to a custom exhaust, Bilstein-tuned suspension, and Brembo braking systems. Clients are brought into the build throughout — ideas evolve in real time, and transparency is a founding principle of the company. Everything is produced from a single source: bodywork, engine, exhaust, throttle bodies, wheels, and even the in-car sound system are all designed and built within the Triebwerk workshop. The motto is straightforward: if it's technically possible, they'll build it.

Where did Triebwerk make its first US appearance?

Triebwerk made its US debut at Air|Water on April 25, 2026 in Costa Mesa, CA. On display was F4.3 — the most powerful and fully realized expression of the Triebwerk backdating program. Built around a 4.3-liter air-cooled flat-six producing 398 hp and 405 Nm of torque, the F4.3 represents over seven years of in-house prototyping distilled into a single car. Air|Water marked the first opportunity for American enthusiasts to experience Triebwerk's craftsmanship up close.